The Lost Story of Sofia Castello by Siobhan Curham

The warm sea breeze ruffles the pages of my notebook as I meet the bright eyes of the elderly lady sat opposite me on the porch. Sofia has been keeping a devastating secret for over sixty years. Why did she fake her own death during the war? And why is she back now to finally tell her story?
Writer Lily Christie is at rock bottom when she’s tasked with the job of a lifetime writing the memoir of Sofia Castello – once world-famous in the war years for singing across Europe, until her tragic death in 1941. So Lily is shocked to hear Sofia is actually in her eighties, living in secret, in a blue-tiled cottage on the Portuguese coast.
Lily listens in fascination as the feisty woman spins an unbelievable tale of fear-filled days spent caring for a young orphaned German girl, and nights performing to crowds of Gestapo agents: until she risked it all, using her fame to help the Allies. Then a tragic betrayal changed the course of her life forever…
But as Lily starts to open up to Sofia about her own private heartache, she realises that Sofia is not being entirely honest with her. And when Sofia refuses to say why she really hired Lily, her fears start to grow. Sofia’s remote beach home, accessed only by a bumpy dirt track, is miles away from anyone. She is clearly still hiding from someone, but who? And could Lily now be in danger too?

What is the final secret haunting Sofia? And can Lily uncover the devastating truth, before her time with Sofia runs out?